Mothers who are physically and/or psychologically dependent upon alcohol and drugs are at risk for a wide range of parenting deficits beginning when their children are infants and continuing as their children move through school-age and adolescent years. Behavioral parent training programs for drug dependent mothers have had limited success in improving mother-child relationships or children's psychosocial adjustment. One reason behavioral parenting programs may have had limited success is the lack of attention to emotional aspects of the mother-child relationship, including (1) mothers' recognition of their children's emotional needs and (2) mothers' capacity to respond sensitively to their children's emotional cues. Research on attachment suggests that the emotional quality of the early mother-child relationship has important implications for many developmental capacities, including emotional and behavior regulation in early years, and social competence academic achievement in school-aged and adolescent years. In this Stage I therapy development study, we propose to modify a previously piloted attachment-based group parenting intervention called Emotionally-Responsive Parenting Group or ERP. The goal of the intervention is to improve the mother's capacity to recognize and sensitively respond to her child's emotional cues. In a pre-pilot study (see Preliminary Study 6) we tested the feasibility of conducting the ERP group intervention as an adjunct group treatment for 23 primarily cocaine-dependent mothers in outpatient drug treatment and found that ERP was highly feasible and showed initial promise for improving maternal recognition of emotional cues. In this study, we aim to modify and validate the intervention as an individual therapy for drug dependent mothers of children ages 18 to 36 months in preparation for a Stage II controlled efficacy trial.